Why to get survey done?
To get a drawing of a building or land exactly the way it is.When appointing a team on a mapping and surveying work we intended to get the following components in the drawing.
North, Site profile, site dimensions, benchmark 0.00, elevation – difference in height at regular intervals, trees, bore wells and wells, boulders, depressions in earth, Roads, power lines overhead and underground, edge condition-fence or compound, Gate – width and height, land use of neighbouring properties, major landmarks nearby, major physical features hills, lakes etc. Let’s understand the significance of each one of these,
- North
Very important & usually missed or messed. Becomes much more important when designing a layout or a house. More so to respond to the climatological effects of the region the site is in and to locate the plot wrt its surroundings.
2. Site profile and dimensions!
How is the shape of site plays a very pivotal role in building design.The profile or shape and how are the dimensions and at what point the line changes or shifts from the normal in crucial for design and zoning aspects.
3. Benchmark +/- 0.00, elevation at regular intervals.
The elevation or the difference in height from the assumed zero comes in handy to locate the building. whether there shall be basement or how much filling or cutting of earth shall hereto be undertaken. All kinds of decisions can be taken well before the construction.
4. Features on the site!
All physical features on the site are very much a part of the site and so become an integral part of any survey drawing. Usually these are messed up in terms of representation in the drawing. Lets examine their relevance and representation.
a. Trees – very important feature. Need to be measured for its location, size of the trunk, Spread from centre (diameter) and name of the tree has to be shown in plan.
For ex : Neem, trunk – 1’3” dia, spread – 6m dia.
b. Bore wells, wells, boulders, water bodies, power line with poles type and what power HT or LT, overhead or underground. All of the above to be shown as they are and in plan. locations, height, width, type, all about them.
5. Roads, edge conditions, entry and exit.
What are the road widths and types abutting the site and how. what is the condition of the edge of site, compound or fence etc; where is the entry or exit to the site and how is it, with height and type.
6. Land use of neighbouring properties.
what is happening on the properties immediately after the site boundary. and how are they located. If not the land use as per records at least the one happening right now.
7. Major landmarks around:
How is the site located wrt the landmark, if any. This will help the architect to visualise and prepare.
8. Physical features nearby:
Any waterbodies, dams, lake, irrigation canals, a hill or a mountain, railway line, airport or an airstrip etc.
To summarise a survey drawing has to give an as is where is picture to any technical professional.